Port Costa, CA Demographics

A map of Port Costa's Population by Race

Port Costa, California has an estimated population of 296, a dramatic increase from the 190 recorded in the 2020 Census. The population is 90.2% White, 9.8% Hispanic, 0.0% Black, 0.0% Asian, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of Port Costa, with one dot drawn for each person counted by the Census, color-coded by race.

Port Costa has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than California overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Port Costa, that probability was 39.0% in 2020 and 17.7% in the most recent ACS estimates.

Port Costa is ranked the 1318th most populous place in California, out of 1,618 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Port Costa was ranked the 1400th most populous place in the 2020 Census.

Port Costa's White Population

267 residents of Port Costa, or 90.2% of the population, identify as White. The share of White residents in Port Costa is significantly higher than in California overall, where 33.8% of the population is White. Port Costa ranks 335th statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's White population has grown by an estimated 82.9%. White residents' share of Port Costa's population has increased from 76.8% to 90.2%.

Port Costa is more White than neighboring Crockett (58.7% White), Benicia (59.5% White), Rodeo (23.7% White), Mountain View (60.3% White), and Martinez (58.9% White).

Port Costa's Black Population

0 residents of Port Costa, or 0.0% of the population, identify as Black. The share of Black residents in Port Costa is lower than in California overall, where 5.2% of the population is Black. Port Costa ranks 1349th statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's Black population has grown from 0 to an estimated 0. Black residents' share of Port Costa's population has remained roughly unchanged at 0.0%.

Port Costa is less Black than neighboring Crockett (7.8% Black), Benicia (4.3% Black), Rodeo (14% Black), Mountain View (1.6% Black), and Martinez (2.2% Black).

Port Costa's Asian Population

0 residents of Port Costa, or 0.0% of the population, identify as Asian. The share of Asian residents in Port Costa is significantly lower than in California overall, where 15.3% of the population is Asian. Port Costa ranks 707th statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's Asian population has declined by an estimated 100.0%. Asian residents' share of Port Costa's population has decreased from 2.6% to 0.0%.

Port Costa is less Asian than neighboring Crockett (8.7% Asian), Benicia (10.8% Asian), Rodeo (20.9% Asian), Mountain View (8.2% Asian), and Martinez (10% Asian).

Port Costa's Hispanic Population

29 residents of Port Costa, or 9.8% of the population, identify as Hispanic. The share of Hispanic residents in Port Costa is significantly lower than in California overall, where 40.2% of the population is Hispanic. Port Costa ranks 1290th statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's Hispanic population has grown by an estimated 61.1%. Hispanic residents' share of Port Costa's population has remained roughly unchanged at 9.8%.

Port Costa is less Hispanic than neighboring Crockett (20% Hispanic), Benicia (15.5% Hispanic), Rodeo (31.8% Hispanic), Mountain View (25.4% Hispanic), and Martinez (20.2% Hispanic).

Port Costa's Native American/Other Population

0 residents of Port Costa, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Port Costa is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Port Costa ranks 960th statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Port Costa's population has decreased from 1.1% to 0.0%.

Port Costa is less Native American/Other than neighboring Benicia (1.8% Native American/Other), Rodeo (2.9% Native American/Other), and Martinez (0.5% Native American/Other).

Port Costa's Multiracial Population

0 residents of Port Costa, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Port Costa is slightly lower than in California overall, where 4.4% of the population is Multiracial. Port Costa ranks 46th statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Port Costa's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Port Costa's population has decreased from 10.0% to 0.0%.

Port Costa is less Multiracial than neighboring Crockett (4.8% Multiracial), Benicia (8.2% Multiracial), Rodeo (6.8% Multiracial), Mountain View (4.5% Multiracial), and Martinez (8.1% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.